Amana Tool 4 facet jobber length fractional drills consist of 2 cutting edges with 2 facets per cutting edge. The Facets consist of the lip relief and the lip clearance angle. Multi-faceted drill geometries translate into improved centering accuracy, thereby producing Rounder, precise holes less likely for “Bell mouthing.” our premium grade carbide Substrate insures increased tool life by a minimum factor of 10x's over HSS coated bits, all while Often eliminating the need for a prior center punch or spotting procedure. Also good for drill Press, #SCFD-102, (B) Cutting height: 1-3/8, (D) diameter: 5/32 (0.163), (D) shank: 5/32, overall length (L): 2-1/2scfd-102 solid carbide CNC 4 facet 118 deg drill point 5/32 dia x 1-3/8 x 5/32 shank x 2-1/2 inch long